674
CXUS51 KOKX 020049 RRA
CLAISP

CLIMATE REPORT
NATIONAL WEATHER SERVICE NEW YORK, NY
726 PM EST THU JAN 01 2026

...................................

...THE ISLIP NY CLIMATE SUMMARY FOR THE YEAR OF 2025...

CLIMATE NORMAL PERIOD 1991 TO 2020
CLIMATE RECORD PERIOD 1963 TO 2025

WEATHER         OBSERVED          NORMAL  DEPART   LAST YEAR`S
                VALUE   DATE(S)   VALUE   FROM     VALUE DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH            104   07/03/1966
 LOW             -14   02/13/1967
HIGHEST          101   06/24         MM      MM       93  07/16
                                                          08/01
LOWEST             7   01/22         MM      MM       10  12/23
AVG. MAXIMUM    62.7               61.1     1.6     63.2
AVG. MINIMUM    46.6               45.2     1.4     47.2
MEAN            54.7               53.1     1.6     55.2
DAYS MAX >= 90    12                8.3     3.7        6
DAYS MAX <= 32    13               16.4    -3.4        8
DAYS MIN <= 32    93               98.3    -5.3       69
DAYS MIN <= 0      0                0.1    -0.1        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM       65.32   1989
 MINIMUM          MM   MM
TOTALS         36.91              45.99   -9.08    48.80
DAILY AVG.      0.10               0.13   -0.03     0.13
DAYS >= .01      119              122.0    -3.0      126
DAYS >= .10       78               75.7     2.3       76
DAYS >= .50       21               30.6    -9.6       30
DAYS >= 1.00      10               11.5    -1.5       18
GREATEST
 24 HR. TOTAL   2.96                                2.81  08/06 TO 08/07
 STORM TOTAL    2.93                                2.80
 (MM/DD(HH))            MM

SNOWFALL (INCHES)
RECORDS
 TOTAL          71.0   1978
 24 HR TOTAL     3.0   MM
 SNOW DEPTH       26   02/09/1978
                       02/08/1978
TOTALS          22.1               31.8    -9.7     13.0
 LIQUID EQUIV   2.20               3.10   -0.90     1.30
SINCE 7/1       12.5                5.0     7.5       MM
 LIQUID 7/1     1.25               0.50    0.75       MM
SNOWDEPTH AVG.     0                                   0
DAYS >= TRACE     23               13.4     9.6       23
DAYS >= 1.0        6                7.9    -1.9        4
GREATEST
 SNOW DEPTH        6   12/15                           3  02/15
                                                          02/17
                                                          02/18
 24 HR TOTAL     0.0    MM                           0.0
 STORM TOTAL     5.8                                 4.3
 (MM/DD(HH))            MM

DEGREE DAYS
HEATING TOTAL   4756               5183    -427     4484
 SINCE 7/1      1733               1803     -70       MM
COOLING TOTAL   1104                885     219     1012
 SINCE 1/1      1104                885     219       MM
................................................................

WIND (MPH)
AVERAGE WIND SPEED              9.7
RESULTANT WIND SPEED/DIRECTION   3/280
HIGHEST WIND SPEED/DIRECTION    39/300    DATE  03/22
HIGHEST GUST SPEED/DIRECTION    60/290    DATE  03/22

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.58
NUMBER OF DAYS FAIR           74
NUMBER OF DAYS PC            188
NUMBER OF DAYS CLOUDY        101

AVERAGE RH (PERCENT)     66

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM             15     MIXED PRECIP               0
HEAVY RAIN               26     RAIN                      46
LIGHT RAIN              147     FREEZING RAIN              0
LT FREEZING RAIN          2     HAIL                       0
HEAVY SNOW                2     SNOW                       5
LIGHT SNOW               23     SLEET                      2
FOG                     140     FOG W/VIS <= 1/4 MILE     39
HAZE                     34

-  INDICATES NEGATIVE NUMBERS.
R  INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T  INDICATES TRACE AMOUNT.

$$